"""Test capture manager — file naming, JSON sidecars, session tracking.

All tests use DemoCamera for zero-hardware-dependency captures.
"""

import json
from pathlib import Path

import pytest

from birdcage_tui.camera import DemoCamera
from birdcage_tui.capture_manager import (
    CaptureManager,
    CaptureMetadata,
    CaptureSession,
    _build_filename,
    _sanitize_name,
)


@pytest.fixture
def manager(tmp_path: Path) -> CaptureManager:
    """CaptureManager with DemoCamera in a temp directory."""
    backend = DemoCamera()
    return CaptureManager(backend, output_dir=tmp_path)


@pytest.fixture
def tracking_metadata() -> CaptureMetadata:
    """Metadata simulating an active tracking capture."""
    return CaptureMetadata(
        mount_az=245.30,
        mount_el=34.20,
        target_name="ISS (ZARYA)",
        target_type="satellite",
        target_id="25544",
        target_az=245.30,
        target_el=34.20,
        target_distance_km=420.0,
        target_range_rate=-2.1,
        tracking_mode="craft",
        tracking_status="TRACKING",
        trigger="manual",
    )


def test_capture_writes_jpeg(manager: CaptureManager, tracking_metadata):
    """Capture should produce a JPEG file."""
    result = manager.capture(tracking_metadata)
    assert result.success
    assert result.path.exists()
    assert result.path.suffix == ".jpg"


def test_capture_writes_json_sidecar(manager: CaptureManager, tracking_metadata):
    """JSON sidecar should always be written alongside JPEG."""
    result = manager.capture(tracking_metadata)
    assert result.success

    # Find the JSON sidecar
    json_files = list(result.path.parent.glob("*.json"))
    assert len(json_files) == 1

    data = json.loads(json_files[0].read_text())
    assert data["mount_az"] == 245.30
    assert data["mount_el"] == 34.20
    assert data["target_name"] == "ISS (ZARYA)"
    assert data["trigger"] == "manual"


def test_filename_generation():
    """Filenames should follow the naming convention."""
    meta = CaptureMetadata(
        mount_az=245.30,
        mount_el=34.20,
        target_name="ISS (ZARYA)",
        timestamp="2026-02-16T08:25:00Z",
    )
    name = _build_filename(meta, "jpg")
    assert name.startswith("ISS-ZARYA_")
    assert "245.30" in name
    assert "34.20" in name
    assert name.endswith(".jpg")


def test_filename_sanitization():
    """Special characters should be stripped from target names."""
    assert _sanitize_name("ISS (ZARYA)") == "ISS-ZARYA"
    assert _sanitize_name("NOAA 19") == "NOAA-19"
    assert _sanitize_name("") == "manual"
    assert _sanitize_name("a/b\\c:d") == "abcd"


def test_filename_no_target():
    """Without a target name, filename should use 'manual'."""
    meta = CaptureMetadata(
        mount_az=180.0,
        mount_el=45.0,
        timestamp="2026-02-16T12:00:00Z",
    )
    name = _build_filename(meta, "jpg")
    assert name.startswith("manual_")


def test_session_counter():
    """Session sequence should increment monotonically."""
    session = CaptureSession()
    assert session.next_sequence() == 1
    assert session.next_sequence() == 2
    assert session.next_sequence() == 3
    assert session.capture_count == 3


def test_session_id_unique():
    """Each session should have a unique ID."""
    s1 = CaptureSession()
    s2 = CaptureSession()
    assert s1.session_id != s2.session_id


def test_subdirectory_creation(manager: CaptureManager, tracking_metadata):
    """Captures should go into date-based subdirectories."""
    result = manager.capture(tracking_metadata)
    assert result.success
    # The parent should be a date directory like "2026-02-16"
    parent = result.path.parent.name
    assert len(parent) == 10  # YYYY-MM-DD
    assert parent.count("-") == 2


def test_multiple_captures_increment(manager: CaptureManager, tracking_metadata):
    """Multiple captures should increment the session counter."""
    r1 = manager.capture(tracking_metadata)
    r2 = manager.capture(tracking_metadata)
    assert r1.success and r2.success
    assert manager.session.capture_count == 2
    # Filenames should differ
    assert r1.path.name != r2.path.name


def test_pillow_fallback(manager: CaptureManager):
    """Manager should report Pillow status without crashing."""
    # This test just verifies the property doesn't throw
    _ = manager.has_pillow  # True if installed, False if not


def test_astropy_fallback(manager: CaptureManager):
    """Manager should report astropy status without crashing."""
    _ = manager.has_astropy  # True if installed, False if not


def test_metadata_session_populated(manager: CaptureManager, tracking_metadata):
    """After capture, metadata should have session info populated."""
    manager.capture(tracking_metadata)
    assert tracking_metadata.session_id == manager.session.session_id
    assert tracking_metadata.sequence_number == 1


def test_manual_capture_no_target(manager: CaptureManager):
    """Capture without tracking should work with minimal metadata."""
    meta = CaptureMetadata(
        mount_az=180.0,
        mount_el=45.0,
        trigger="manual",
    )
    result = manager.capture(meta)
    assert result.success

    # JSON sidecar should exist
    json_files = list(result.path.parent.glob("*.json"))
    assert len(json_files) >= 1